Ozimops planiceps

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Ozimops planiceps
Southern Freetail Bat (Mormopterus planiceps).jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Molossidae
Genus: Ozimops
Species:
O. planiceps
Binomial name
Ozimops planiceps
Peters, 1866
Distribution of Mormopterus planiceps.png
Distribution of M. planiceps in Australia
Synonyms

Nyctinomus planicepsPeters, 1866, Mormopterus planiceps

Contents

Ozimops planiceps is a small bat in the family Molossidae, native to Australia and Indonesia.

Taxonomy

The taxonomy of the Mormopterus species has been a complicated issue for some time. Originally described by Wilhelm Peters in 1881, [2] it was understood even then that the species was a complex. [3] Though there have been many alterations, M. planiceps has officially been a species since 1906. [4]

The most recent and currently accepted description of the species is by Reardon et al. (2014). [3] It is thought that the complex is a result of the species being polyphyletic, where presented phenotypes appear the same but do not result from common ancestors. Texts may refer to this species as 'Mormopterus Species 4'. There are 6 undescribed species in the genus. Species 4 generally refers to the southern free-tailed bat, although it has been separated into eastern and western populations at times. [3]

The type locality is Sydney, the capital of New South Wales, although authors have attributed various localities as the origin of the type specimen used in the first description; the type has also be allocated to Western Australia (Iredale & Troughton, 1934). [5]

Common names include the little mastiff bat and southern free-tailed bat.

Description

Identifying this species can be difficult, as the main features used in clarifying the species complex were genetic (using allozyme alleles). Morphological attributes that aid in identification are forearm length, mass and colouring [6] however there are a number of similar species in the genus, such as M. petersi.

The colouring differs between ventral and dorsal fur; dorsal and head fur are uniform in colour and ranging light brown to grey-brown. [3] Ventral fur is generally lighter with fur ranging from white at the base, light brown in the midsection, and lighter at the ends. Other descriptive features include wrinkled lips, triangular ears, and as the name suggests, a tail that extends largely past the tail membrane. [6] [7] M. planiceps can be differentiated from similar species by such physical details as nostril spacing. Its most telling external feature is the phallus. This species possess the largest glans penis of the genus Mormopterus, on average greater than 9 mm and of a distinctive shape. The species also possesses a flattened skull and a uniquely angled and sized pre-molar. [3]

Distribution and habitat

The southern free-tailed bat occurs in most of south-east Australia including New South Wales, Victoria and South Australia, extending into South-west Western Australia and along the east coast to Queensland. It is also found in New Guinea. [1] The species is found across a number of vegetation types including mallee, shrubland, open forest and woodland, with a preference for wetter environments. It has adapted well to fragmentation and is able to dwell around cities and towns. [3] [6] M. planiceps can roost in tree hollows and man-made cavities such as sheds and barns. They have not been found in caves even where these are available. Populations can contain up to 100 individuals, with an average of 30-40 females in a roost and smaller groups for males (these can be as small as 3-4 individuals). This species can be quite tolerant of roosting with other species and will often share roosts. [3]

Diet and Foraging

Like all Molosidae, the southern free-tailed bat is an insectivore. It uses echolocation to locate its insect prey and feeds in or above the open canopy, also taking advantage of gaps in trees (including edges and roads). It is agile enough to forage on the ground, although it may not be able to take off from ground level and will generally climb upwards a metre or two before taking flight. The species has been known to eat a variety of different insects, including moths, various beetles and Hymenoptera. [8] Diet is dependent on region and habitat. In Victoria they have been found to feed on the Rutherglen bug (Nysius vinitor) which is considered an agricultural pest. [6]

Reproduction

Females are monotocous, producing one young each summer. [9] Conception occurs from the end of winter to the beginning of spring. Sexual maturity is achieved for females within a year of birth. Females were found to be able to store sperm for up to two months to conceive during optimal times; a characteristic unknown in other species of mollossidae. Insemination occurs anywhere from autumn to spring. [10] The exact gestation time is unknown.

Conservation

The IUCN currently classifies the southern free-tailed bat as Least concern due to its wide distribution and common occurrence, although population numbers appear to be declining in certain locations. [1]

Related Research Articles

<span class="mw-page-title-main">Free-tailed bat</span> Family of bats

The Molossidae, or free-tailed bats, are a family of bats within the order Chiroptera. The Molossidae is the fourth-largest family of bats, containing about 110 species as of 2012. They are generally quite robust, and consist of many strong-flying forms with relatively long and narrow wings with wrinkled lips shared through their genus. Their strong flying form allows them to fly 60 miles per hour using tail winds and at altitudes over 10,000 feet. This makes them unique among bats, as they are the only bat family that withstands the elevation. They are widespread, being found on every continent except Antarctica. They are typically found in caves, abandoned mines, or tunnels.

<i>Mormopterus</i> Genus of bats

Mormopterus is a genus of molossid microchiropterans, small flying mammals referred to as free-tailed bats. The genus has been the subject of several revisions, and the diversity of taxa centred on Australia were separated to a new genus Ozimops, and two monotypic genera, Setirostris and Micronomus. The species of Mormopterus, in this stricter sense, are only found in areas outside of Australia and West Papua.

<span class="mw-page-title-main">Wagner's bonneted bat</span> Species of bat

Wagner's bonneted bat or Wagner's mastiff bat, is a species of bat in the family Molossidae. It is found in the Americas from Argentina and Peru north to Mexico, and Cuba. Populations in Florida in the United States are now recognized as the Florida bonneted bat

<i>Micronomus</i> Species of bat

Micronomus norfolkensis is a species of molossid bat, a family of flying mammals. The bat is endemic to Australia, where it occurs from southeastern Queensland to eastern New South Wales. They are the sole species of genus Micronomus and referred to by variations on east-coast free-tailed bat.

<i>Ozimops beccarii</i> Species of bat

Beccari's free-tailed bat is a species of bat in the free-tailed bat family Molossidae found to Indonesia and Papua New Guinea. It can be found in several habitat types, including savanna, tropical moist forest, and fragmented and urban habitat. It roosts in trees, caves, and buildings in small colonies. This is a common species which is not considered to be threatened. The names Beccari's free-tailed bat or Beccari's mastiff bat once applied to populations in Australia.

<span class="mw-page-title-main">Peters's wrinkle-lipped bat</span> Species of bat

Peters's wrinkle-lipped bat, also called Peters's goblin bat, is a species of bat in the family Molossidae, the free-tailed bats. It is endemic to Madagascar, where it is widespread and in some areas abundant. It commonly roosts in human-made structures, sometimes in colonies with other free-tailed bat species. It forages in the open, often in agricultural areas. The bat is sexually dimorphic, with males larger than females.

<span class="mw-page-title-main">Kalinowski's mastiff bat</span> Species of bat

Kalinowski's mastiff bat is a species of bat in the family Molossidae, the free-tailed bats. It is native to Peru and northern Chile. Relatively little is known about the species, but it is thought to be common in its range. It is sometimes seen in urban areas. Molecular sequencing data indicates that the closest relatives of M. kalinowski are members of another genus, Nyctinomops.

<span class="mw-page-title-main">Little goblin bat</span> Species of bat

The little goblin bat is a species of bat in the family Molossidae, the free-tailed bats. It is endemic to Cuba.

<span class="mw-page-title-main">Incan little mastiff bat</span> Species of bat

The Incan little mastiff bat is a species of bat in the family Molossidae, the free-tailed bats. It belongs to the subgenus Micronomus.

<span class="mw-page-title-main">White-striped free-tailed bat</span> Species of bat

The white-striped free-tailed bat is a species of bat in the family Molossidae. Its echolocation calls are audible to humans, which is a characteristic found in only a few microbat species. The species was formerly classified as Tadarida australis.

<span class="mw-page-title-main">Florida bonneted bat</span> Species of bat

The Florida bonneted bat or Florida mastiff bat is a species of bat in the genus Eumops, the bonneted bats or mastiff bats. Until recently, it was classified as a subspecies of Wagner's bonneted bat. It is endemic to southern Florida in the United States. This species has one of the smallest geographical distributions of any New World bat. It has been called "one of the most critically endangered mammal species in North America". It is protected under the Endangered Species Act.

<i>Setirostris</i> Genus of bats

Setirostris eleryi is a species of small insectivorous bat found in inland eastern Australia. It is the sole species of the molossid genus Setirostris, a name that refers to the coarse bristles on their faces. Earlier common names have referred to this unique feature, and the 'free-tail' that is a common feature of its microchiropteran family, the Molossidae; no single common name emerged during the taxonomic revisions that identified what was referred to as the bristle-faced freetail.

Ozimops loriae is a species of bat found in Australia and Papua New Guinea.

Ozimops ridei is a species of molossid bat found in eastern Australia.

Ozimops petersi, the inland free-tailed bat is a species of bat found in Australia.

Ozimops kitcheneri, the south-western free-tailed bat, is a species of molossid bat found in Southwest Australia. A small flying mammal, it forages in forests and woodlands for insects.

Ozimops is a genus of molossid bats found in Australia, Indonesia and Papua New Guinea.

Ozimops lumsdenae is a species of molossid bat found in Australia, the largest of the genus Ozimops.

Ozimops cobourgianus is a species of molossid bat, insectivorous flying mammals known as freetail bats, which are found in north and west coastal regions of Australia. First described in 1959, the group were later recognised as species Mormopterus cobourgianus and soon placed with a new genus. They are associated with mangrove habitat and roost in the hollows of those trees, and known to seek food there and in eucalypt or melaleuca woodland or other coastal habitat. A smaller bat of genus Ozimops, O. cobourgianus are around fifty millimetres long and weigh six to ten grams. Little is known of their habits.

Ozimops halli, also referred to as the Cape York free-tailed bat, is a species of molossid bat found at the Cape York Peninsula in Australia.

References

  1. 1 2 3 Lumsden, L.F.; Reardon, T.B. (2021). "Ozimops planiceps". IUCN Red List of Threatened Species . 2021: e.T71732146A22084197. doi: 10.2305/IUCN.UK.2021-1.RLTS.T71732146A22084197.en . Retrieved 19 November 2021.
  2. Peters, W. (1881). Über die Chiropterengattung Mormopterus und die dahin gehörigen Arten. Monatsberichte Preussische Akademie der Wissenschaften zu Berlin 1881, 482–485.
  3. 1 2 3 4 5 6 7 Reardon, T.B; Mckenzie, N. L.; Cooper, S. J. B.; Appleton, B.; Carthew, S.; Adams, M. (2014). "A molecular and morphological investigation of species boundaries and phylogenetic relationships in Australian free-tailed bats Mormopterus (Chiroptera: Molossidae)". Australian Journal of Zoology. 62 (2): 109–136. doi: 10.1071/zo13082 . hdl: 10536/DRO/DU:30070309 .
  4. Thomas, O (1906). "On mammals collected in south-west Australia for Mr W. E. Balston". Proceedings of the Zoological Society of London. 76: 468–478'.
  5. Jackson, S.; Groves, C. (2015). Taxonomy of Australian Mammals. CSIRO Publishing. p. 260. ISBN   9781486300136.
  6. 1 2 3 4 Churchill, Sue (2008). Australian Bats (2 ed.). Allen & Unwin. ISBN   9781741754612.
  7. Menkhorst, Peter; Knight, Frank (2010). A Field Guide to the Mammals of Australia (3 ed.). Oxford University Press. ISBN   9780195573954.
  8. Freeman, Patricia W. (1981). "A Multivariate Study Of The Family Molossidae (Mammalia, Chiroptera): Morphology, Ecology, Evolution". Mammalogy Papers: University of Nebraska State Museum. 26.
  9. Crichton, Elizabeth G. (1987). "Reproductive Biology of the Female Little Mastiff Bat, Mormopterus planiceps (Chiroptera: Molossidae) in Southeast Australia". The American Journal of Anatomy. 178 (4): 369–386. doi:10.1002/aja.1001780408. PMID   3604956.
  10. Krutzsch, PH (1987). "Reproductive biology of the male little mastiff bat, Mormopterus planiceps (Chiroptera:Molossidae), in southeast Australia". The American Journal of Anatomy. 178 (4): 352–368. doi:10.1002/aja.1001780407. PMID   3604955.